Improvement in direct-action steam-pumps



UNITED STATES WILLIAM SEWELL AND ADAM S. CAMERON, OF NEW YORK, N. Y.

IMPROVEMENT IN DIRECT-ACTION STEAM-PUMPS.

Specification forming part of Letters Patent No. @2,69I, dated May 10, 1864.

To all whom it may concern;

Be it known that we, WILLIAM SEWELL and ADAM S. CAMERON, of the city, county, and State of New York, have invented a new and useful Improvement in Direct- Action Steam-Pumps, by which they may be converted into hand-pumps; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure l is a plan view of a steam-pump with our improvement. Fig. 2 is a side view of the same with part of the connections in section.

Similar letters of reference indicate corresponding parts in both figures.

It has been heretofore necessary on steamvessels to provide separate hand-pumps, besides the steam-pumps, as there are many purposes for which a hand-pump is required-as for pumpingin or out ofthe boilers, pumping ship, washing decks, &c., in port, and in other cases when steam is down andthe steam-pumps cannot be used. The ordina-ry hand-pumps require separate connections, which, together with the whole system of pipes, &c., of the steam-pump, make a complicated and costly arrangement. By providing for the conversion of the steam-pumps into hand-pum ps thenecessity for the separate hand-pumps and their several connections is obviated, and their cost saved, with a very trilling addition to the cost of the steam-pumps.

The object ot' our invention is to make the above-mentioned desirable provision; and to this end it consists in providing the steam and water pistons with separate rods and with a detachable connection, and so arranging arockshaft having an extensible arm, or its equivalent, in relation to the rod of the water-piston that by means of the said arm, or equivalent, the said rod may be connected with the said rock-shaft for the purpose of working the water-piston by hand levers or bars attached to the said rock-shaft.

It also consists in making the detachable connection of the two piston-rods serve as a guide to the waterpiston rod in working the pump by hand.

To enable others skilled in the art to make and use our invention, we Will proceed to describe its construction and operation.

A is the steam-cylinder, and B the water-cylinder. C is the rod of the steam-piston, and

D the rod of the water-piston. E is a socket secured firmly and permanentlyin any suitable manner to the head of the steampiston rod C, and having a portion of the water-piston rod D fitted into it snugly but easily. The length of the so-tted portion of the said piston-rod and the corresponding portion of the socket being a little greater than the length of stroke of the pistons, and the said portion of the said piston-rod and corresponding portion of the socket being of cylindrical form, when the said piston-rod is disconnected the socket may serve to guide it and preserve the rectilinear motion of its piston. The rod D is secured in its socket by the key F, inserted through slo's in the said rod and socket, for the purpose ot' connectingthe steam and water pistons to work the pump by steam. This key is knocked out or otherwise withdrawn to disconnect the pistonrods when the pump is to be worked by hand. The water-piston rod D has a vertical slot, a, provided in it outside of the socket E, to receive the extensible arm G of the rockshaft H.

The rock-shaft H is arranged below and transversely to thepiston-rods in suitable bearings, d d,supported upon the bed-plate I of the pump, and is made with a socket, b, the parallel sided opening ot' which extends right through the rock-shaft for the reception of the extensible arm G, which is itted into it. The said socket is fitted with a set-screw, c, to secure the arm G in position. When the pump is worked by steam, the arm G is withdrawn below the upper end of the socket b, as shown in black outline in Fig. 2, and so secured by the set-screw, leaving the rock-shaft disconnected from the piston-rod. One end of the rock-shaft is made with an enlarged head, e, in which holes are provided for the insertion of the hand-levers or bars f f to work the pump by hand.

When itis desired to work the pump by hand, the key F is withdrawn and the steam-piston moved back as far as possible into its cylinder, the arm G is moved upward into the slot a of the pis ton-rod D, as shown in red color in Fig. 2, and the levers or bars ff are inserted into the rock-shaft. The pump is then Worked by one or more men at each lever or bar.

The steam-pump represented has a iy-wheel shaft connected with it in the manner claimed in William Sewells Letters Patent of November 4, 1862, No. 36,862. J is the iiy-Wheei shaft, and K the rod which connects the crank of the said shaft With the cross-head L, Which is attached to the socket E. M is the guide for the cross-head. The present invention is not, however, limited in its application to this kind of steam-pump, but, as is obvious, may be applied to all direct-action steam-pumps.

What We claim as our invention, and desire to secure by Letters Patent, is-

1. The combination, in direct-action steampumps, of the separate steam and Water piston rods G D, having a detachable connection with the rock-shaft H, and the extensible arm G, or its equivalent, for connecting the said rockshaft with the Water-piston rod, substantially as and for the purpose herein specied.

2. The socket E, connecting the steam and Water piston rods for Workin g the pumps by steam, and serving as a guide to the Waterpiston rod in Working` the pump by hand, substantially as herein described.

WILLIAM SEWELL. ADAM S. CAMERON. Witnesses:

M. M. LIVINGsToN, GEO. W. REED. 

